WORLD CIVILIZATION

Detailed explanation-1: -In the southern alluvial plain, both rivers flow through marshes, and the Euphrates flows through Lake Al-Ḥammār, an open stretch of water. Finally, the Euphrates and Tigris join and flow as the Shatt al-Arab to the Persian Gulf.

Detailed explanation-2: -The Tigris and Euphrates rivers originate in the Taurus mountains of southeastern Turkey where they are fed with alpine snows, lakes and rains.

Detailed explanation-3: -Formed by the confluence of the Karasu and Murat rivers in the Armenian Highland, the Euphrates descends between major ranges of the Taurus Mountains to the Syrian plateau. It then flows through western and central Iraq to unite with the Tigris River and continues, as Shatt Al-Arab, to the Persian Gulf.